Buzzfeed shared a collection of longhand letters Koch wrote in response to emails he received—he responded to every email he got in this way.

Poynter Institute pointed out the words on Koch's gravestone, which he had planned for years: "The marker will bear the Star of David and a Hebrew prayer, 'Hear O Israel, the Lord our God, the Lord is One.' It also will be inscribed with the last words of journalist Daniel Pearl before he was murdered by terrorists in 2002: 'My father is Jewish. My mother is Jewish. I am Jewish.'"